Update info on pg_hba.conf comments.
Update info on pg_hba.conf comments.

ovr/postgres-xl,ahachete/gpdb,rvs/gpdb,randomtask1155/gpdb,randomtask1155/gpdb,rvs/gpdb,randomtask1155/gpdb,randomtask1155/gpdb,kaknikhil/gpdb,0x0FFF/gpdb,foyzur/gpdb,yuanzhao/gpdb,xinzweb/gpdb,Chibin/gpdb,Chibin/gpdb,jmcatamney/gpdb,zaksoup/gpdb,cjcjameson/gpdb,Postgres-XL/Postgres-XL,kmjungersen/PostgresXL,jmcatamney/gpdb,CraigHarris/gpdb,rubikloud/gpdb,xinzweb/gpdb,atris/gpdb,Chibin/gpdb,kaknikhil/gpdb,ashwinstar/gpdb,atris/gpdb,lintzc/gpdb,postmind-net/postgres-xl,50wu/gpdb,greenplum-db/gpdb,tangp3/gpdb,Postgres-XL/Postgres-XL,royc1/gpdb,xuegang/gpdb,chrishajas/gpdb,lintzc/gpdb,arcivanov/postgres-xl,ahachete/gpdb,atris/gpdb,rubikloud/gpdb,lpetrov-pivotal/gpdb,chrishajas/gpdb,Chibin/gpdb,randomtask1155/gpdb,rvs/gpdb,lisakowen/gpdb,zaksoup/gpdb,snaga/postgres-xl,Chibin/gpdb,postmind-net/postgres-xl,lintzc/gpdb,snaga/postgres-xl,cjcjameson/gpdb,kaknikhil/gpdb,tangp3/gpdb,rvs/gpdb,rubikloud/gpdb,cjcjameson/gpdb,jmcatamney/gpdb,foyzur/gpdb,xuegang/gpdb,rvs/gpdb,CraigHarris/gpdb,adam8157/gpdb,cjcjameson/gpdb,CraigHarris/gpdb,50wu/gpdb,ahachete/gpdb,yuanzhao/gpdb,postmind-net/postgres-xl,foyzur/gpdb,tpostgres-projects/tPostgres,cjcjameson/gpdb,royc1/gpdb,kaknikhil/gpdb,snaga/postgres-xl,kaknikhil/gpdb,greenplum-db/gpdb,yazun/postgres-xl,randomtask1155/gpdb,xuegang/gpdb,janebeckman/gpdb,chrishajas/gpdb,Quikling/gpdb,lpetrov-pivotal/gpdb,rubikloud/gpdb,Chibin/gpdb,Quikling/gpdb,atris/gpdb,postmind-net/postgres-xl,zaksoup/gpdb,royc1/gpdb,zaksoup/gpdb,adam8157/gpdb,yuanzhao/gpdb,adam8157/gpdb,greenplum-db/gpdb,rvs/gpdb,ashwinstar/gpdb,Quikling/gpdb,Quikling/gpdb,lintzc/gpdb,lisakowen/gpdb,arcivanov/postgres-xl,xuegang/gpdb,0x0FFF/gpdb,techdragon/Postgres-XL,xuegang/gpdb,arcivanov/postgres-xl,ahachete/gpdb,royc1/gpdb,rvs/gpdb,royc1/gpdb,yazun/postgres-xl,xinzweb/gpdb,rvs/gpdb,zeroae/postgres-xl,yuanzhao/gpdb,jmcatamney/gpdb,chrishajas/gpdb,yuanzhao/gpdb,CraigHarris/gpdb,zeroae/postgres-xl,lpetrov-pivotal/gpdb,jmcatamney/gpdb,tpostgres-projects/tPostgres,oberstet/postgres-xl,Chibin/gpdb,lpetrov-pivotal/gpdb,tangp3/gpdb,kmjungersen/PostgresXL,atris/gpdb,jmcatamney/gpdb,greenplum-db/gpdb,0x0FFF/gpdb,zaksoup/gpdb,oberstet/postgres-xl,adam8157/gpdb,xinzweb/gpdb,Quikling/gpdb,kmjungersen/PostgresXL,randomtask1155/gpdb,janebeckman/gpdb,ashwinstar/gpdb,rubikloud/gpdb,rvs/gpdb,ahachete/gpdb,xinzweb/gpdb,yuanzhao/gpdb,kaknikhil/gpdb,ovr/postgres-xl,tangp3/gpdb,arcivanov/postgres-xl,kaknikhil/gpdb,royc1/gpdb,ovr/postgres-xl,lintzc/gpdb,Postgres-XL/Postgres-XL,lpetrov-pivotal/gpdb,greenplum-db/gpdb,foyzur/gpdb,yazun/postgres-xl,CraigHarris/gpdb,50wu/gpdb,royc1/gpdb,tpostgres-projects/tPostgres,tangp3/gpdb,rubikloud/gpdb,techdragon/Postgres-XL,xuegang/gpdb,ovr/postgres-xl,jmcatamney/gpdb,adam8157/gpdb,Quikling/gpdb,tpostgres-projects/tPostgres,randomtask1155/gpdb,edespino/gpdb,lpetrov-pivotal/gpdb,kmjungersen/PostgresXL,rubikloud/gpdb,Postgres-XL/Postgres-XL,ahachete/gpdb,atris/gpdb,kaknikhil/gpdb,atris/gpdb,arcivanov/postgres-xl,adam8157/gpdb,50wu/gpdb,CraigHarris/gpdb,50wu/gpdb,0x0FFF/gpdb,edespino/gpdb,oberstet/postgres-xl,chrishajas/gpdb,ashwinstar/gpdb,50wu/gpdb,edespino/gpdb,tangp3/gpdb,edespino/gpdb,yazun/postgres-xl,janebeckman/gpdb,pavanvd/postgres-xl,oberstet/postgres-xl,jmcatamney/gpdb,0x0FFF/gpdb,lintzc/gpdb,ahachete/gpdb,janebeckman/gpdb,xuegang/gpdb,edespino/gpdb,yuanzhao/gpdb,50wu/gpdb,ahachete/gpdb,Chibin/gpdb,snaga/postgres-xl,greenplum-db/gpdb,cjcjameson/gpdb,snaga/postgres-xl,zeroae/postgres-xl,pavanvd/postgres-xl,foyzur/gpdb,zeroae/postgres-xl,Chibin/gpdb,ovr/postgres-xl,Quikling/gpdb,lisakowen/gpdb,lisakowen/gpdb,cjcjameson/gpdb,CraigHarris/gpdb,greenplum-db/gpdb,oberstet/postgres-xl,CraigHarris/gpdb,arcivanov/postgres-xl,Chibin/gpdb,kmjungersen/PostgresXL,ashwinstar/gpdb,zaksoup/gpdb,ashwinstar/gpdb,tangp3/gpdb,lintzc/gpdb,lintzc/gpdb,rvs/gpdb,ashwinstar/gpdb,atris/gpdb,janebeckman/gpdb,edespino/gpdb,pavanvd/postgres-xl,janebeckman/gpdb,kaknikhil/gpdb,cjcjameson/gpdb,Quikling/gpdb,xuegang/gpdb,chrishajas/gpdb,techdragon/Postgres-XL,zaksoup/gpdb,kaknikhil/gpdb,tangp3/gpdb,janebeckman/gpdb,chrishajas/gpdb,xinzweb/gpdb,zeroae/postgres-xl,lisakowen/gpdb,pavanvd/postgres-xl,foyzur/gpdb,yuanzhao/gpdb,yuanzhao/gpdb,adam8157/gpdb,cjcjameson/gpdb,Quikling/gpdb,tpostgres-projects/tPostgres,techdragon/Postgres-XL,lisakowen/gpdb,postmind-net/postgres-xl,chrishajas/gpdb,techdragon/Postgres-XL,edespino/gpdb,xuegang/gpdb,xinzweb/gpdb,janebeckman/gpdb,50wu/gpdb,edespino/gpdb,foyzur/gpdb,0x0FFF/gpdb,rubikloud/gpdb,janebeckman/gpdb,0x0FFF/gpdb,edespino/gpdb,zaksoup/gpdb,yazun/postgres-xl,cjcjameson/gpdb,royc1/gpdb,yuanzhao/gpdb,foyzur/gpdb,lisakowen/gpdb,0x0FFF/gpdb,lisakowen/gpdb,CraigHarris/gpdb,ashwinstar/gpdb,lpetrov-pivotal/gpdb,adam8157/gpdb,xinzweb/gpdb,Quikling/gpdb,greenplum-db/gpdb,janebeckman/gpdb,Postgres-XL/Postgres-XL,lintzc/gpdb,edespino/gpdb,pavanvd/postgres-xl,lpetrov-pivotal/gpdb